Cooling device for explosion-engines.



PATENTED DEC. l, 1903.

i E. E. WEAVER. OOOLING DEVEOEEOE EXPLOSION ENGINES.

APPLIGATION FILED JULY 8. 1903..

N0 MODEL.

' engine of the two-cycle principlethat is, in

' No. 745,701. l

UNITED STATES atented Iljecember 1, 1903.

PATENT EEiCE.

RALPH B. WEAVER, MILTON, MASSACHUSETTS, ASSIGNOR TO SAMUEL OABOT, OFBOSTON, MASSACHUSETTS.`

CooLlNe DEVICE Fon EXPLOSION-ENGINES.

SPECIFICATION forming part of Letters Patent No. 745,701, dated December-1, 1903. Application filed July Si 1903. Serial No. 164.680. (Nomodel.)

To all whom it may concern:

Be itknown that I, RALPH B. WEAVER, of Milton, in the county of Norfolkand AState of Massachusetts, have inventedcert-ain newl and usefulImprovements in Cooling Devices for Explosion-Engines, of which Vthefollowing is a specification, reference being had therein to theaccompanying drawings.

The present invention relates to improvements in engines, andparticularly in cooling devices for explosion-engines.

The object of the invention is to so construct an engine that thecylinder-lining may be removed and replaced. l V Y Another object of theinvention is'to so construct a gas-engine comprising a cylinder and anouter water-circulating chamber or chambers and gas supply and exhaustchannels that the cylinder may be readily removed.

Another object of the invention is to improve the construction oftheWater-circulating-chamber, and particularly as regards the reductionin temperature of that portion helow the exhaust.

Another object of the invention is to improve the general constructionof engines, and particularly of gasengines.

The invention consists in the peculiar construction of the water-jacketor Water-circulatin g chamber. A

The invention also consists in the peculiar construction ot" thecylinder.

The invention still further consists in such other peculiar features ofconstruction and combination of parts as shall hereinafter be morefullydescribed, and pointed out in the claims.

Figure 1 represents a vertical sectional view of parts of the improvedengine. Fig. 2 represents a similar view taken at right angles toFig. 1. Fig. 3 representsa cross-sectional View taken on line 3 3, Fig.1.

Similar numbers of reference designate corresponding parts throughout.

AS illustrated herein in its preferred form, the invention is shown asapplied to a gas which a charge of explosive gaseous conlpound iscompressed at each return stroke of the piston and is then exploded, thenext charge ot explosive being forced into the cylinder during theworking stroke of the piston and but slightly after the escape of theproducts of combustion from the prior charge begins. The invention isnot, however, liin- 5 5 ited to this or to any other particular class ofengine, and in describing the invention as applied to this class ofengine it is not my intention to restrict this invention in any manner.

. In the drawings, 5 indicates the lower section of the Water-jacket orWatencirculating chamber having the inner and outer annular Walls 6 and7, the space between which is divided by the partitions 8 8 and 9 9,Fig. 3, into the Water-compartments 10 10, connected by thecross-channel 11 and the gas snpply and exhaust channels 12 and 13,connecting, respectively, with the openings 14' and 15the Wall 6 beingomittedphetvveen the partitions 8 Sand 9 9 to open the channels 12 and13 directly to the central portion of the jacket, the'wall 6 extendingdownward and being supported by any suitable crank-box or base 16 andthe upper end of the compartments 10 10 and channels 12 and 13 beingclosed by the partition 17, through which above the compartments 10 10are formed the openings 18 18.

Embraced by the Water-jacket ris the cyl'- inder 19, having thecompression-chamber 2()= `furnished with the tubular screw-threadedextension 21, through which the spark-plug or otherigniting device isintroduced. From the cylinder 19 extends the iiange 22, having theperforation 23 23, adapted to register with the holes 18 in thepartition 17, this iiange being secured to the `partition by bolts 2424.

Inclosing the upper portion of the cylinder 19 and thecompression-chamber is the dome 25, the annular edge of which litsclosely against the portion 17 beyond the periphery of the flange 22,While in the upper portion of the dome is the opening 26, fittingclosely the tubular extension 21, and the opening 27, adapted to beconneced with a Water-pipe. The dome 25 is secured in place by the unit28, screwed onto the screw-thread of the tubular extension 21.

The cylinder 19-is furnished with the usual gas-inlet port-s 29 at thatportion opposite the channel 12 and with the outlet-ports 30 at IOS LLC

that portion of its wall-opposite the exhaustchannel 13, the ports 30being located slightly nearer to the compression-chamber 2O than are theports 29. Within the cylinder works the piston 81, having the usualdeiiector 32 and connected with any suitable driving mechanism by thepiston-rod 83 in the ordinary manner for piston-driving.

With the parts thus assembled water is supplied through the opening 7 inthe lower portion of the Wall 7 and passes through the compartments 1010 and their connections 11 and cooling that portion of wall 7 beneaththe exhaust-opening 15. As the temperature of the water and the supplyof the same increases the Water circulates upward through the holes 18and the perforations 23, respectively, in the partition 17 and in theflange 22 and around the upper portion of the cylinder and itscompression-chamber until it (the water) passes away through the outlet27.

In the operation of the piston a charge of gaseous compound is explodedin the chainber 20, and the pressure thus created forces the pistonoutward from the closed end of said chamber. As the end of the pistonpasses the ports 30 these ports are opened to permit of the escape ofthe products of combustion to the exhaust-channel 13, while the ports 29are immediately thereafter opened to the ingress of gaseous compoundforced by the action of the piston from the opening 14 through thechannel 12 and said ports, the deflector 32 directing this compoundtoward the compression-chamber and preventing its undue mixing with theproducts of combustion which are approximately at the same time passingout of the ports 30. On the return stroke of the plunger the new chargeof explosive is compressed and ignited in the usual wellknown manner.

Attention is particularly called to the facility with which the cylinder19 and its compression-chamber can be removed by simply loosening thenuts 28 and 24 22 after taking olf the dome 25. This is of greatimportance in gas and other engines, as by this construction a worncylinder can readily be removed and a new cylindersubstituted withoutskilled labor or the use of complicated tools or machinery. By thisconstruction the waterjacket and dome may be of metal of less Weightthan that of the cylinder, thus effecting a large saving in the weightof the engine, as the water-jacket is usually the heaviest part of theengine, but is not required to resist any high degree of pressure. Y

The engine is herein shown as of the vertical type; butit is understoodthat the cylinder and its associated parts may be placed in a horizontalposition without changing the invention and that the references to therelative locations of the parts of the engine are used herein merely todesignate the preferred locations of the same.

Having thus described my invention, I claim as new and desire to secureby Letters Patent- 1. A gas-engine comprising a cylinder having fuelinlet and outlet ports formed in its wall, and a Water-jacket sectionremovably secured to the cylinder and having supply and exhaust channelsregistering with said ports.

2. A gas-engine comprising a Water-jacket section having inlet andexhaust channels connecting with the interior thereof and a series ofwater-compartments connected by a channel `located beneath theexhaust-opening, and a cylinder removably secured to saidjacket-section.

3. A gas-engine comprising a cylinder having a Water-compartment formedbetween the wall of the cylinder and an outer shell, and a water-jacketsection embracing the lower portion of the cylinder and having inner andouter walls independent of the cylinder-walls.

4. A gas-engine comprising a cylinder-support in the nature of awater-jacket and having a gas-inlet and an exhaust open to the interiorof the support, and a cylinder removably secured in said support, theWall of the cylinder forming the inner wall of the inlet and exhaust.

5. The combination with a waterjacket section having a water compartmentfurnished with a perforated end partition, a cylinder having aperforated flange secured to said partition, and a shell embracing theupper portion of the cylinder and fitting against the Water-jacketsection.

6. The combination with the cylinder 20 having the tubular extension 21and the perforated ange 22, and a water-jacket section havingcompartments connected by channels with the perforations of such flangeand a Water-inlet, of the shell 25 embracing the ange 22 and having anopening, to lit over the extension 2l, and the outlet 27, and means forsecuring the shell 25 to such extension, as and for the purposedescribed.

In testimony whereof I a'ix my signature in presence of two witnesses;

RALPH B. WEAVER,

Witnesses:

HENRY J. MILLER, C. A. LISET.

IOO

